What species are invading and what dangers do they face? This was one of the main questions that two experts tried to answer at an event organised this Tuesday by the ARA and the Institut d'Estudis Catalans (IEC). And the answer, as always, is found in humans. Because it is theHomo sapiens who decided to build, and expand, and expand again the Suez Canal so that goods from the Indian Ocean could easily reach the Mediterranean, which caused many species from the East to also travel, by sea or stuck under ships, to the West. It has also been humans who have decided to buy, for purely aesthetic reasons, ornamental plants from other continents that have now become their own. And, once again, it is human action that has caused a climate emergency that heats the waters and disrupts ecosystems.

In nature there are several examples of animals impostors They manage to fool their predators thanks to their physical appearance. As their names indicate, the bee fly and the ant spider pretend to be what they are not in order to survive: the first earns respect with its colors and the second appears to be harmless. However, research confirms that one of the queens of mimicry would be the blue fly. According to a study led by the Institute of Evolutionary Biology (IBE), the larvae of this insect are capable of developing a "mask" and a characteristic smell to coexist with termites.